August 27, 2017 to September 1, 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Permanent Magnet Dipoles For the ESRF Upgrade

Aug 30, 2017, 11:45 AM
G102-103 Room

G102-103 Room

Regular 15 minutes Oral Presentation A2 - Resistive Accelerator Magnets Wed-Mo-Or19


Dr Joel Chavanne (European Synchrotron Radiation Facility)


The new magnet lattice of the European Synchrotron Radiation Facility (ESRF) will include 128 Permanent Magnet (PM) dipoles presently under in-house construction. It requires about 6 tons of high coercivity Sm2C017 permanent magnet material subdivided into 12,300 blocks. The choice of the permanent magnet technology is motivated by an energy-saving context, the compactness of the magnet lattice and also a long experience acquired in this area with Insertion Devices at the ESRF. Each dipole has a length of 1.784 m and is segmented into five modules with different field strengths in order to achieve a longitudinal field gradient as it contributes to the reduction of the horizontal emittance of the stored electron beam. From the concept to the serial production, the project involves several interesting topics such as detailed numerical simulations, a passive method for the temperature stabilization of the magnet, a full methodology for the modules and dipoles assembly and dedicated magnetic measurement methods as well. Critical subjects, such as long term stability of the PM dipoles, are discussed. A review of the project will be presented.

Submitters Country France

Primary author

Dr Joel Chavanne (European Synchrotron Radiation Facility)


Dr Chamseddine Benabderrahmane (European Synchrotron Radiation Facility) Mr Christophe Penel (European Synchrotron Radiation Facility) Gael Le Bec (ESRF)

Presentation materials